<!DOCTYPE html>

<head>
    <meta charset="UTF-8">
    <title>CSS font-awesome 图标菜单栏</title>
    <style>
        body {
            margin: 0;
        }

        .icon-bar {
            width: 100%;
            background-color: #555;
            overflow: auto;
        }

        .icon-bar a {
            float: left;
            width: 20%;
            text-align: center;
            padding: 12px 0;
            transition: all 0.3s ease;
            color: white;
            font-size: 36px;
        }

        .icon-bar a:hover {
            background-color: #000;
        }

        .active {
            background-color: #4CAF50 !important;
        }
    </style>
</head>

<body>
    <link rel="stylesheet" href="https://cdn.staticfile.org/font-awesome/4.7.0/css/font-awesome.min.css">
    <div class="icon-bar">
        <a class="active" href="#"><i class="fa fa-home"></i></a>
        <a href="#"><i class="fa fa-search"></i></a>
        <a href="#"><i class="fa fa-envelope"></i></a>
        <a href="#"><i class="fa fa-globe"></i></a>
        <a href="#"><i class="fa fa-trash"></i></a>
    </div>
</body>

</html>